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Doppler physics

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https://www.readbyqxmd.com/read/28819497/-volvulus-of-the-small-intestine-caused-by-mesenteric-lipoma
#1
Papa Alassane Mbaye, Aime Lakh Faye, Aloise Sagna, Ndeye Aby Ndoye, Ndeye Fatou Seck, Oumar Ndour, Gabriel Ngom
We report the case of a 7-year old girl presenting with sub-occlusive syndrome associated with acute paroxysmal abdominal pain at the level of the upper abdomen, vomiting and no evacuation of faeces. Physical examination showed discomfort with palpation of the upper abdomen. Abdominal ultrasound showed poorly limited intraperitoneal tissue formation without vascular features on doppler, exercising a mass effect on the neighborhood structures; mesenteric vessels were in their normal position. This mass on CT scan scorresponded to a well limited lipomatous formation exercising a mass effect on the caecum associated with volvulus of the small intestine...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28817412/effect-of-physical-methods-of-lymphatic-drainage-on-postexercise-recovery-of-mixed-martial-arts-athletes
#2
Aleksandra Zebrowska, Robert Trybulski, Robert Roczniok, Wieslaw Marcol
OBJECTIVE: Physical methods are reported to be important for accelerating skeletal muscle regeneration, decreasing muscle soreness, and shortening of the recovery time. The aim of the study was to assess the effect of the physical methods of lymphatic drainage (PMLD) such as manual lymphatic drainage (MLD), the Bodyflow (BF) therapy, and lymphatic drainage by deep oscillation (DO) on postexercise regeneration of the forearm muscles of mixed martial arts (MMA) athletes. DESIGN AND METHODS: Eighty MMA athletes aged 27...
August 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28808198/ultrasonographic-evaluation-of-enthesitis-in-patients-with-ankylosing-spondylitis
#3
Huayong Zhang, Jun Liang, Junlan Qiu, Fan Wang, Lingyun Sun
The aim of this study was to assess sensitivity and responsiveness of power Doppler ultrasound (PDUS) in detecting enthesitis for ankylosing spondylitis (AS) patients compared to clinical examinations. Twenty AS patients initiating etanerceptunderwent clinical and PDUS examinations of six bilateral entheseal sites at baseline and after 1, 2 and 3 months of treatment. Clinical and PDUS examinations identified at least one entheseal lesion in nine (45%) and 19 (95%) patients, respectively. Furthermore, of 240 entheseal sites examined in these 20 patients, PDUS detected 123 entheseal lesions (51...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28800300/intraventricular-vector-flow-mapping-a-doppler-based-regularized-problem-with-automatic-model-selection
#4
Kondo Claude Assi, Etienne Gay, Christophe Chnafa, Simon Mendez, Franck Nicoud, Juan F P J Abascal, Pierre Lantelme, François Tournoux, Damien Garcia
We propose a regularized least-squares method for reconstructing 2D velocity vector fields within the left ventricular cavity from single-view color Doppler echocardiographic images. Vector flow mapping is formulated as a quadratic optimization problem based on an [Formula: see text]-norm minimization of a cost function composed of a Doppler data-fidelity term and a regularizer. The latter contains three physically interpretable expressions related to 2D mass conservation, Dirichlet boundary conditions, and smoothness...
August 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28782262/relevance-of-ultrasonography-in-assessing-disease-activity-in-patients-with-idiopathic-inflammatory-myopathies
#5
Joana Sousa Neves, Daniela Santos Faria, Marcos Cerqueira, Maria Carmo Afonso, Filipa Teixeira
AIM: Idiopathic inflammatory myopathies (IIM) comprise a group of rare and heterogeneous diseases difficult to diagnose and follow up. Precise measures for assessing disease activity are not available at the moment. Our objective was to evaluate the usefulness of ultrasonography (US) as a monitoring tool in IIM. METHOD: The study evaluated IIM patients diagnosed and followed up from 2005 to 2015 in our department. Fifteen patients with a mean age of 52.2 ± 22...
August 7, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28777521/blue-fingered-diver-case-report
#6
Rebecca Cable, Lindell K Weaver, Anne B Roberts, Greg Goodman, Kayla Deru
Although Raynaud's phenomenon is a well-known consequence of exposure to cold, neither its incidence in recreational divers nor case reports in that population have been reported in the medical literature. We present a case report of the initial manifestation of primary Raynaud's phenomenon during a warm-water scuba dive. A healthy 18-year-old Caucasian male made four open-circuit compressed air scuba dives over two days in the Florida Keys to a maximum depth of 90 feet. After two of those dives, he noted painless, blue discoloration on three digits of his left hand, unaccompanied by sensory changes, which resolved within an hour of surfacing...
November 2016: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28777413/proximal-ulnar-artery-arteriovenous-fistula-inflow-is-an-uncommon-but-useful-vascular-access-option
#7
William C Jennings, Alexandros Mallios
INTRODUCTION: A proximal ulnar artery arteriovenous fistula (PUA-AVF) is a logical vascular access option when the distal ulnar artery is occluded or inadequate in addition to other specific vascular anatomic variants. This study reviews a series of patients where the proximal ulnar artery was used for AVF inflow in establishing a reliable autogenous access for these uncommon patients. MATERIALS AND METHODS: All new patients referred for vascular access with a PUA-AVF created during an eight-year period were evaluated...
July 27, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28744995/idiopathic-sudden-sensorineural-hearing-loss-and-m%C3%A3-ni%C3%A3-re-syndrome-the-role-of-cerebral-venous-drainage
#8
Marco Matteo Ciccone, Pietro Scicchitano, Michele Gesualdo, Francesca Cortese, Annapaola Zito, Fabio Manca, Barbara Boninfante, Pasquale Recchia, Domenico Leogrande, Domenico Viola, Marialessia Damiani, Valeria Gambacorta, Antonio Piccolo, Vincenzo De Ceglie, Nicola Quaranta
AIM: to evaluate the influence of cerebral venous drainage on the pathogenesis of idiopathic sudden sensorineural hearing loss (ISSHL) and Ménière syndrome (MD). METHODS: we enrolled 59 consecutive patients (32 males, mean age 53.05+15.37 years): 40 ISSHL and 19 MD. All underwent physical examination, biochemical evaluation (glycemic and lipid profile, viral serology, C reactive protein, etc), audiometric (tonal, vocal, vestibular evoked myogenic potentials and auditory brainstem response test) and impedentiometric examination...
July 26, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28729408/femoral-artery-atherosclerosis-is-associated-with-physical-function-across-the-spectrum-of-the-ankle-brachial-index-the-san-diego-population-study
#9
Christina L Wassel, Alicia M Ellis, Natalie C Suder, Emma Barinas-Mitchell, Dena E Rifkin, Nketi I Forbang, Julie O Denenberg, Antoinette M Marasco, Belinda J McQuaide, Nancy S Jenny, Matthew A Allison, Joachim H Ix, Michael H Criqui
BACKGROUND: The ankle-brachial index (ABI) is inadequate to detect early-stage atherosclerotic disease, when interventions to prevent functional decline may be the most effective. We determined associations of femoral artery atherosclerosis with physical functioning, across the spectrum of the ABI, and within the normal ABI range. METHODS AND RESULTS: In 2007-2011, 1103 multiethnic men and women participated in the San Diego Population Study, and completed all components of the summary performance score...
July 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28728567/settings-and-artefacts-relevant-for-doppler-ultrasound-in-large-vessel-vasculitis
#10
REVIEW
L Terslev, A P Diamantopoulos, U Møller Døhn, W A Schmidt, S Torp-Pedersen
Ultrasound is used increasingly for diagnosing large vessel vasculitis (LVV). The application of Doppler in LVV is very different from in arthritic conditions. This paper aims to explain the most important Doppler parameters, including spectral Doppler, and how the settings differ from those used in arthritic conditions and provide recommendations for optimal adjustments. This is addressed through relevant Doppler physics, focusing, for example, on the Doppler shift equation and how angle correction ensures correctly displayed blood velocity...
July 20, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28718693/effects-of-sedation-with-dexmedetomidine-and-buprenorphine-on-echocardiographic-variables-blood-pressure-and-heart-rate-in-healthy-cats
#11
Einar Johard, Anna Tidholm, Ingrid Ljungvall, Jens Häggström, Katja Höglund
Objectives Sedative agents are occasionally used to enable echocardiographic examination when screening cats for heart disease, such as hypertrophic cardiomyopathy (HCM). Owing to their haemodynamic effects, sedative agents may alter echocardiographic measurements. The aim of the study was to evaluate the effects of the sedative combination dexmedetomidine and buprenorphine on echocardiographic variables, blood pressure (BP) and heart rate (HR) in healthy cats. Methods Fifty healthy, client-owned cats were prospectively recruited and included after physical examination...
July 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28714381/gemcitabine-associated-pseudocellulitis-a-missed-diagnosis
#12
Dalvir Gill, Josh Schrader, Matthew Kelly, Fidel Martinez, Wajihuddin Syed, Jonathan Wright
We report a case of a 51-year-old male with past medical history significant for cholangiocarcinoma presented with two weeks of worsening bilateral lower extremity swelling and erythema. Patient has been on active chemotherapy for his cholangiocarcinoma with Gemcitabine weekly infusions. Physical exam was significant for bilaterally petechial rash coalescing into ecchymoses over the dorsum of the feet, sparing soles and toes, which dissipated into thinning petechiae more proximally. On labs he did not have any leukocytosis, his platelet count was 50 × 10(3)/µL and basic metabolic panel was benign...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28705754/progression-of-lyme-disease-to-bell-s-palsy-despite-treatment-with-doxycycline
#13
Luis A Marcos, Zengmin Yan
No abstract text is available yet for this article.
July 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28697943/ultrasonographic-characteristics-of-accessory-sex-glands-and-spectral-doppler-indices-of-the-internal-iliac-arteries-in-peri-and-post-pubertal-dorper-rams-raised-in-a-subtropical-climate
#14
E S C Camela, R P Nociti, V J C Santos, B I Macente, G S Maciel, M A R Feliciano, W R R Vicente, I Gill, P M Bartlewski, M E F Oliveira
The aim of the present study was to determine and compare ultrasonographic characteristics of accessory sex glands and spectral Doppler indices of the internal iliac arteries in peri- and post-pubertal rams raised in a subtropical climate. Forty-five Dorper rams were examined (24 rams aged 8-11 months and 21 rams aged 12-24 months). Digital images of all accessory sex glands were subjected to morphometric and echotextural analyses, the latter using commercially available image analytical software Image ProPlus(®)...
June 23, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28679320/a-rare-case-of-non-traumatic-acute-intraabdominal-hemorrhage-ruptured-superior-mesenteric-artery-aneurysm
#15
Ersin Borazan, Latif Yılmaz, Alper Aytekin, Gökhan Gökaslan, Selim Kervancıoğlu
INTRODUCTION: Rupture of superior mesenteric artery aneurysm (SMAA) is a very rare and life-threatening condition, presenting with acute intraabdominal hemorrhage. CASE: The patient was hospitalized upon complaint of nonspecific severe abdominal pain. Diagnosis of SMAA was established by abdominal Doppler ultrasound that showed a pseudo-aneurysmal lesion with size of 76 × 47 mm at the superior mesenteric main branch. Endovascular stenting was not performed because of the wide neck in the segment of the jejunal branches from SMA and the risk of branch loss during treatment...
July 6, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28676656/detecting-the-orbital-angular-momentum-of-electro-magnetic-waves-using-virtual-rotational-antenna
#16
Chao Zhang, Lu Ma
Orbital Angular Momentum (OAM) is a typical spatial mode of an Electro-Magnetic (EM) wave. Correctly detecting the OAM mode is fundamental and of foremost importance when applying the phenomenon to wireless transmission in free space. It is found that when rotating an OAM wave, a rotational Doppler shift that is proportional to the rotation speed and the OAM mode number can be observed. This property can be used for OAM detection, i.e., different OAM modes are identified by measuring the corresponding rotational Doppler frequency shifts...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28663159/synchronous-solid-pseudopapillary-tumor-and-insulinoma-in-an-adolescent-men1-patient-presenting-with-diagnostic-dilemmas
#17
Ahmet Uçar, Banu Özgüven, Muharrem Battal, Felda Alpaslan, Evrim Özmen, Aylin Yetim, Yasin Yılmaz
Multiple endocrine neoplasia (MEN1) is a rare autosomal dominant disorder characterized by primary hyperparathyroidism, enteropancreatic neuroendocrine tumors, and anterior pituitary adenomas. A 16-year-old male presented to the emergency outpatient clinic with tonic convulsions. Physical examination in the postconvulsive period was unremarkable and revealed a muscular, postpubertal adolescent. Biochemical tests at admission were consistent with hyperinsulinemic hypoglycemia and remarkable for elevated levels of liver transaminases and creatine kinase...
June 30, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28647634/more-successful-results-with-less-energy-in-endovenous-laser-ablation-treatment-long-term-comparison-of-bare-tip-fiber980nm-laser-and-radial-tip-fiber1470nm-laser-application
#18
Ümit Arslan, Eyüpserhat Çalık, Mehmet Tort, Ziya Yıldız, Ali İhsan Tekin, Hüsnü Kamil Limandal, Mehmet Ali Kaygın, Özgür Dağ, Bilgehan Erkut
BACKGROUND: Varices and venous insufficiency are common and serious health problems in the general population which affect quality of life. Endothermal treatment of the great saphenous vein has become the first line of treatment for superficial venous reflux, and the endovenous laser ablation (EVLA) method has been widely accepted all over the world. In this method, ablation is provided by a laser fiber inserted into the lumen of the vein. Initially, the fibers were 810 nm, but today the fibers are usually 940, 980, or 1470 nm...
June 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28637734/pregnancy-specific-stress-fetoplacental-haemodynamics-and-neonatal-outcomes-in-women-with-small-for-gestational-age-pregnancies-a-secondary-analysis-of-the-multicentre-prospective-observational-trial-to-optimise-paediatric-health-in-intrauterine-growth-restriction
#19
Terri A Levine, Ruth E Grunau, Ricardo Segurado, Sean Daly, Michael P Geary, Mairead M Kennelly, Keelin O'Donoghue, Alyson Hunter, John J Morrison, Gerard Burke, Patrick Dicker, Elizabeth C Tully, Fergal D Malone, Fiona A Alderdice, Fionnuala M McAuliffe
OBJECTIVES: To examine associations between maternal pregnancy-specific stress and umbilical (UA PI) and middle cerebral artery pulsatility indices (MCA PI), cerebroplacental ratio, absent end diastolic flow (AEDF), birthweight, prematurity, neonatal intensive care unit admission and adverse obstetric outcomes in women with small for gestational age pregnancies. It was hypothesised that maternal pregnancy-specific stress would be associated with fetoplacental haemodynamics and neonatal outcomes...
June 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28636515/a-brief-period-of-intensive-cardiac-rehabilitation-improves-global-longitudinal-strain-and-diastolic-function-after-a-first-uncomplicated-myocardial-infarction
#20
Gabriella Malfatto, Miriam Revera, Giovanna Branzi, Francesca Ciambellotti, Alessia Giglio, Simonetta Blengino, Matteo Oldani, Camilla Facchini, Gianfranco Parati, Mario Facchini
Objectives In patients with abnormal left ventricular ejection fraction (LVEF) after acute myocardial infarction (AMI), cardiac rehabilitation with physical training prevents cardiac remodelling. To define the role of rehabilitation in the recovery of ventricular function in less severe cases, we studied its effects on more refined indexes of left ventricular function in uncomplicated, low-risk patients. Methods and results Fifty-five patients underwent percutaneous coronary revascularization after uncomplicated first AMI...
March 21, 2017: Acta Cardiologica
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